Hi I have to prove the bit error rate of a network and wanted to simply send a couple of Gigs to the echo port of a remote computer and compare the /proc/net/snmp values for Udp:InErrors and Tcp:InErrs which, according to my information, count the incorrect tcp/udp checksums.
Sadly while playing around with iperf[1] and sendip, I saw that the error numbers are raising with even 1/s when using more than say 100kbit in a normal switched FastEthernet. Does inErrors count something different/additional than header checksums? I would have expected some dropped packages due to congestion but not incorrect packages?! I tried inetd and xinetd on 2.4 kernels and even using the echo service of a cisco router. (the router reported no problems, just my linux host) bye, -christian- [1]: iperf --interval=10 --port=7 --udp --bandwidth=1M --num=1200M -c host -- Christian Hammers WESTEND GmbH - Aachen und Dueren Tel 0241/701333-0 [email protected] Internet & Security for Professionals Fax 0241/911879 WESTEND ist CISCO Systems Partner - Authorized Reseller
